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Lesechka [4]
3 years ago
9

What is the mass number of an atom equal to?

Chemistry
1 answer:
PolarNik [594]3 years ago
7 0

Answer:

number of protons plus the number of electrons in an atom

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Ionic bonds is formed between a metal and a nonmetal because the metal transfers it's valence electrons to the nonmetal. Electrons doesn't transfer between two nonmetal because both are negatively charged.
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If you change the 2 in front of 2O2 to a 3, what will be the change in the results on the right side of the equation? (1 point)
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There is an extra O2 molecule left over

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A force of 25 newtons is exerted over an area of 50 square meters. Calculate
snow_lady [41]

Answer:

the pressure exerted in pascals is 0.5 Pa

Explanation:

The computation of the pressure exerted in pascals is shown below:

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Explain why an atom with 7 valence electrons and 2 energy levels has a high electronegativity and ionization energy.
boyakko [2]

Explanation:

This atom is on the almost extreme right of the 2nd period of the periodic table (except for the stable element on the extreme right). This means it has the highest mass number of the unstable elements of the period. It thus attracts its electron clouds more strongly that the elements to the left of the period . This means it can gain an atom easily ( this is what is called electronegativity – tendency to attract an electron) than is can lose an electron. In addition, it only needs to acquire one electron to achieve a stable electron configuration (8) in its valence shell.

Due to these, it is hard for the atoms to lose an electron which is why it has a high ionization energy- the energy required to lose an electron.

Learn More:

For more on electronegativity and ionization energy check out;

brainly.com/question/13961537

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